SOLUTION: For each problem, use meaningful variables to write a linear function to model the situation. Then interpret the slope and y-intercept in words. Identify which variable would be

Algebra ->  Equations -> SOLUTION: For each problem, use meaningful variables to write a linear function to model the situation. Then interpret the slope and y-intercept in words. Identify which variable would be       Log On


   

Question 1182788: For each problem, use meaningful variables to write a linear function to model the situation. Then interpret the slope and y-intercept in words. Identify which variable would be on the horizontal axis and which one would be on the vertical axis.
a) Model the cost if you buy an iPod for $200 and download songs for $1.29 each.

b) Model the weekly salary a salesman earns if his salary is a combination of his base salary and commissions on his sales. His base weekly salary is $500 and he makes $50 for each sale.
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
y = 200 + 1.29 * x
y = total cost.
x = number of downloaded songs.
200 = cost of ipod
1.29 = cost of each downloaded song.


y = 500 + 50 * x
y = total compensation.
x = number of sales.
500 = base salary per week.
50 = compensation for each sale.

the value of y in both cases is on the vertical axis.
the value of x in both cases is on the horizontal axis.

here's what each graph looks like.
first the ipod and songs.
second the base salary and commission